Binder



H. EfOLSEN.

BINDER. APPLICATION FILED MAY 23, 1918 Patented Mar. 1 1921.

2 SHEETS-SHEET l- H: EHOL'SEN.

BINDER. APPLICATION FILED MAY 23, I918.

' Patented Mar 1, 1921;

l I a UNITED HENRY E. oLsEN, or CHICAGO, ILLINOIS, ASSIGNOR T0 ACoooNrINC DEVICES CCMPAN or HICAGO, ILLINOIS, A CORPORATION or ILLINoIs.

BINDER.

Specification of Letters Patent.

Patented Mar. 1, 1921.

7 Application filed May 23, 1918. a Serial No. 236,115;

'To. all whom it may concern:

- Be it known that I, HENRY E; OLSEN, a citizen of the United States, residing at Chicago, in the county'of Cook and State of Illinois, have invented a new and useful Improvement in Binders, of which the following is a specification. f

Ihis invention relates particularly to binders employing ball-lock devices for securing a clamping member to the posts.

The primary object of'the invention is to provide an improved device *for detachably locking the adjustable clamping member-or clamping-members to the posts.

The invention, in-its preferred embodiment, is illustrated in the accompanying drawings, in whichi Figure vl-is a brokenplan view showing theupper side of a clamping-member which is attached-to a cover-section and hasthe invention applied thereto; Fig. 2 isa broken plan view showing the underside of the clamping-member and cover-section; Fig- 3 is a plan viewshowingthe vlower clamping member which carries the posts and is connected to. the lower cover-section; Fig. 1 is an enlarged broken sectional view taken on the lines ofFigs; 2 and 3 and Fig-5 is'an enlarged broken sectional view taken-on the line 55 ofFig; 4; r

f Referring to the drawings, A lower cover-section which "has a clampin member A fromv which rise post's B; and 6, an upper-cover section,iwith which is con} nected. a clamping-member. G adjustably mounted on said posts.

'Ihe cover-sections A and C are referably provided with hinge-eyes 10 whic are connected by pintles 11 to the hinge-eyes 12 on the edges of the clamping-members A and C The lower clamping member A may be of any suitable or approved construction. As shown in this instance, it comprises a sheet member 13 bent into hollow form and having the edges on its inner side separated to provide the longitudinal slot 14. Blocks 15 to which are connected the lower ends of the posts B are placed within the clampingmember A and secured in position by rivets 16. In the end portions of the hollow member 13 are fitted the end-plugs 17 which are secured in place in any suitable manner, as by screws, or rivets, 18;

' The upper Clamping-member C is made represents a hollow to contain the improved devices for releasably looking it to the posts B, and it preferably consists of a sheet-metal member lower clamping-member A to provide'the longitudinal slot 14: on its underside, and which has in its end portions the plugs 17 which may be similar to those on the clamping-member A and which may besimilarly secured in position by rivets 18 e The improved devices for releasably locking. the clamping-member C to the postsB nal slot 20 and is mounted on the transverse pivot 21- "Through a; longitudinal slot 25 which is provided in the depressionl'26 in the upper part of the sheet-metal member 13 extends a vertical'stud 27 which iscarried by the button 28 which latter is slidablymovable on the clamping-member C The stud 27 is adapted to contact withthe cam surface-29 which is provided on the cam-lever 24, and the button 28, preferably is arranged in the depression-26 w that it is below or flush with the/outermost surface spring 30 is confined in a bore 22- in the block 19 i and below" the upper wall of the clamping-member, and servesnormally to depress the end of the lever to throw the ball into frictional Contact with the binding post. The lever has a forked end engaging the ball, and is adapted to lift the ball against the force of the spring.

As will be seen in Figs. drawings, the bore 22 converges downwardly and toward the post-bore 21, and said bore 22 intersects the bore 21 along one 7 side so as to provide the tapered slot 31 through which the ball 23 will project slightly into the post-bore 21.

From the foregoing description, the construction, operation and advantages of the improved locking device will'be readily apparent to those skilledin the art. It will be understood that when the upper clamping-member C isfitted on the posts B and "13 which is formed similarly to that of the of the 'clamping m'ember C A small coil- V land 5 of the is moved down on said posts to clamp the sheets, the balls 23 will not interfere with such action; but any upward pressure upon the upper clamping-member causes the balls 23 to bind between the posts B and the downwardly-converging walls of the bores 22. The springs tend to force the balls 23 downwardly and into locking engage ment with the posts B, this action occurring because the balls 23 are crowded be tween the posts-B and the walls in the lower portion of the bores 22. The balls 23 can be released from the posts B by sliding the 7 buttons 28 to cause the studs 27 to move in contact with the cam surfaces 29 so that the levers 24 are actuated to lift the balls 23 to the upper portions of the bores 22 where they are out of frictional engagement with' the posts B.

I V i It will be evident that the improved looking device is simple and effective, and that the clamp1ng-member C cannot be accidentally released from the posts B by pres- V sure exerted axially of the studs 27 c in connection with binders for book-posting Y cure'by Letters Patent is The invention may be usefully employed purposes of the character described, in the application of Arthur J. Lloyd, No. 236,336, 7 filed May 24:, 1918. In any case it is desirable to employ thesliding cams for actuating the ball actuating levers, as thereby is obviated the danger of accidental release when theebinder is thrown upon "a table. 7

No unn'ecessary limitation should be understood from' the foregoing detailed descrlptlon which has been given for clearness of understanding only; but the appended claims should be construed as broadly as is permissible in view of the prior art." c What I regard as new and deslre to se- ,1. A binder comprising a post,a clamping-member having abore receiving said post, a supporting block secured in said clamping-member and provided with apostbore and with an intersecting ball-bore, a ball in the ball-bore of said block, a camotally mounted in the clamping-member,

said lever being, adapted to move said ball relatively to said post, and 'a stud slidably mounted on said clamping-member and adapted to contact with said cam surface to actuate said lever. a

3. .A binder having a clamping-member fitted on a post, a ball arranged in said clamping-member and adapted to'frictionally engage saidv post, a lever ,pivotally mounted in said clamping-member and engaging said ball, said lever being provided with a cam surface, aspring servin to press said lever in such direction as. to orcejsaid 7 ball into gripping engagement with said post,-a nd a member slidably mounted in said clamping member and adapted .to' contact with said cam surface to actuateisaid lever to of engagement withsaid move said ball out 4. In a binder,'thercombination of a clamping-member' formed with a depres sion, a post, passing through said clampingmember, aball arranged insaid clam-pings member and adapted to. frietionally engage said 'post',a lever provided with a cam 'surface,rsaid lever' pivotally mounted in j said 7 7 ball out of frictional engagement, with said post, spring means tending to hold said: ball in thegripping position, a "slidably movable button arranged said depres- V clamping-member and adapted to movesai'd 1 sion, and a stud onsaidbutton adaptedito 7 contact with said cam surface.v 

